title: Simulation of ionic current through the nanopore in a double-layered semiconductor membrane.
abstract: We study the effects of different nanopore geometries (double-conical, single-conical, cylindrical) on the electrostatic potential distribution and ionic conductivity in a double-layered semiconductor nanopore device as functions of the applied membrane bias. Ionic current-voltage characteristics as well as their rectification ratios are calculated using a simple ion transport model. Based on our calculations, we find that the double-layered semiconductor membrane with a single-conical nanopore with a narrow opening in the n-Si layer exhibits the largest range of available potential variations in the pore and, thus, may be better suited for control of polymer translocation through the nanopore.
authors.affiliation: Department of Physics, Clarkson University, Potsdam, NY 13699, USA.
authors.forename: Alexey
authors.initials: A
authors.lastname: Nikolaev
authors.forename: Maria E
authors.initials: ME
authors.lastname: Gracheva
mesh_terms: D003198:Computer Simulation; D007477:Ions; D008567:Membranes, Artificial; D008956:Models, Chemical; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D016062:Porosity
chemical_list: D007477:Ions; D008567:Membranes, Artificial